Home / 3,940.64-5,912.34-2,629.64

Finding the Fourth Proportional to 3,940.64, 5,912.34 and 2,629.64

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Solution

The fourth proportional to 3,940.64, 5,912.34 and 2,629.64 is: 3,945.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.64 : 5,912.34 = 2,629.64 : x
  2. Step 2: Convert to fraction form
    3,940.64/5,912.34 = 2,629.64/x
  3. Step 3: Cross multiply
    3,940.64x = 5,912.34 × 2,629.64
  4. Step 4: Simplify right side
    3,940.64x = 15,547,325.76
  5. Step 5: Solve for x
    x = 15,547,325.76/3,940.64
  6. Step 6: Final answer
    x = 3,945.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.